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河南2019中考第23题
Author:
chen-sir
Topic:
Quadratic Functions
GeoGebra
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球体的体积推导
探究三角形的全等條件
圓的切線方程
双心四边形
空间中两直线的位置关系
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兩圓滾動軌跡
教学素材：指数函数与对数函数互为反函数
推移（x 方向）的副本
七彩勾股树
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Reflection
Solids or 3D Shapes
Parallelogram
Isosceles Triangles
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